The fediverse, explained

The fediverse is an interconnected ecosystem of social apps built on open protocols, most prominently ActivityPub, which lets users move their posts, followers and data between platforms. David Pierce, writing for The Verge, explains that the fediverse is not a single network but many apps, such as Mastodon, Pixelfed, Lemmy and PeerTube, that can read and interact with each other's content. He says he expects ActivityPub to become the standard, noting Threads has promised to federate and Flipboard is moving to the protocol. The article notes that Mastodon, though the largest fediverse app, remains small compared with Facebook.